guys..should i buy this phone to replace my samsung a3 2016?

this stats for first full charge MY set..   

[attachmentid=8599911][attachmentid=8599913]

Hi, just have some questions,

1) RN4 local set confirm 4g? At all telco?
2) Any gps issue? Previously i use mi3 and mi4 also got gps issue.
3) Compare to mi4 camera, which camera is better?

Thanks